A canister is a container with a lid or cover, typically used for storing food or other items. The term canister can refer to four different types of containers: teargas (7 letters), JAR (3 letters), BIN (3 letters), and TIN (3 letters). Teargas is a chemical weapon that causes irritation to the eyes, skin, and lungs. A JAR is a cylindrical container made of glass or plastic, often used for storing food. A BIN is a large, open-topped container, usually made of plastic or metal, used for storing items. Lastly, a TIN is a metal container, usually cylindrical in shape, used for storing food or other items.